User`s guide

Installing Optional Disk and Tape Drives
7-18
SBB LED Status Indicators
The hot-swap backplane monitors SBB status to identify error conditions
or failures. This status is displayed on the SBB LEDs. The left LED
displays the device activity status and the right LED displays the fault
status.
• The left LED (green) is the activity status LED and is on or flashing
when the SBB is active.
CAUTION: For non-RAID adapters, removing a SBB when
the left LED is on or flashing can cause the loss or
corruption of data.
• For RAID adapters, the right LED (amber) is the SBB fault LED
and indicates an error condition when it is either on or flashing.